Hopeless in record time (5)
I believe the answer is:
inept
'hopeless' is the definition.
(I've seen this before)
'in record time' is the wordplay.
'record' becomes 'ep'.
'time' becomes 't'.
'in'+'ep'+'t'='INEPT'
(Other definitions for inept that I've seen before include "Clumsy, bumbling" , "Not competent" , "Unskilful or unsuitable" , "Futile" , "Lacking skill" .)